6264440 has 64 divisors (see below), whose sum is σ = 17357760. Its totient is φ = 1981440.

The previous prime is 6264439. The next prime is 6264481. The reversal of 6264440 is 444626.

6264440 = 943² + 944² + ... + 949².

It is a Harshad number since it is a multiple of its sum of digits (26).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2780 + ... + 4500.

It is an arithmetic number, because the mean of its divisors is an integer number (271215).

Almost surely, 2^6264440 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6264440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8678880).

6264440 is an abundant number, since it is smaller than the sum of its proper divisors (11093320).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

6264440 is a wasteful number, since it uses less digits than its factorization.

6264440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1752 (or 1748 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 26.

The square root of 6264440 is about 2502.8863338154. The cubic root of 6264440 is about 184.3433255940.

The spelling of 6264440 in words is "six million, two hundred sixty-four thousand, four hundred forty".